A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE CURING SHEET
To provide concrete curing sheet allowing physical property deterioration of concrete caused by temperature change during curing to be simply and accurately determined.SOLUTION: A concrete curing sheet 1 is provided with a reversible thermal discoloration layer 3 on a surface of a supporting body 2, which exhibits interchangeability between a colored state and a discolored state showing a hysteresis characteristic regarding a color density-temperature curve, in a process where temperature rises from the colored state, starts discoloring upon reaching a discoloring start temperature t3 and becomes a complete discolored state in a range of a complete discoloring temperature t4 equal to or more than the temperature t3, in a process where the temperature falls from the discolored state, begins coloring upon reaching a coloring start temperature t2 and exhibits the hysteresis characteristic showing the complete colored state in a temperature range equal to or lower than a compete colored temperature t1 lower than the temperature t2, and changes color as showing a hysteresis width (ΔH) equal to or more than 25°C regarding the color density-temperature curve, and changes its color due to temperature change and has a complete discoloring temperature t4 at 30 to 40°C.SELECTED DRAWING: Figure 2
【課題】 養生時の温度変化によるコンクリートの物理的性質の悪化を簡便且つ正確に判別できるコンクリート養生シートを提供する。【解決手段】 支持体２表面に、色濃度－温度曲線に関してヒステリシス特性を示して発色状態と消色状態の互変性を呈し、発色状態から温度が上昇する過程では、消色開始温度ｔ３に達すると消色し始め、温度ｔ３より高い完全消色温度ｔ４以上の温度域で完全に消色状態となり、消色状態から温度が下降する過程では、発色開始温度ｔ２に達すると発色し始め、温度ｔ２より低い完全発色温度ｔ１以下の温度域で完全に発色状態となるヒステリシス特性を示し、色濃度－温度曲線に関して２５℃以上のヒステリシス幅（ΔＨ）を示して変色し、完全消色温度ｔ４が３０～４０℃である温度変化により変色する可逆熱変色性材料を含む可逆熱変色層３を設けてなるコンクリート養生シート１。【選択図】 図２
CONCRETE CURING SHEET
To provide concrete curing sheet allowing physical property deterioration of concrete caused by temperature change during curing to be simply and accurately determined.SOLUTION: A concrete curing sheet 1 is provided with a reversible thermal discoloration layer 3 on a surface of a supporting body 2, which exhibits interchangeability between a colored state and a discolored state showing a hysteresis characteristic regarding a color density-temperature curve, in a process where temperature rises from the colored state, starts discoloring upon reaching a discoloring start temperature t3 and becomes a complete discolored state in a range of a complete discoloring temperature t4 equal to or more than the temperature t3, in a process where the temperature falls from the discolored state, begins coloring upon reaching a coloring start temperature t2 and exhibits the hysteresis characteristic showing the complete colored state in a temperature range equal to or lower than a compete colored temperature t1 lower than the temperature t2, and changes color as showing a hysteresis width (ΔH) equal to or more than 25°C regarding the color density-temperature curve, and changes its color due to temperature change and has a complete discoloring temperature t4 at 30 to 40°C.SELECTED DRAWING: Figure 2
【課題】 養生時の温度変化によるコンクリートの物理的性質の悪化を簡便且つ正確に判別できるコンクリート養生シートを提供する。【解決手段】 支持体２表面に、色濃度－温度曲線に関してヒステリシス特性を示して発色状態と消色状態の互変性を呈し、発色状態から温度が上昇する過程では、消色開始温度ｔ３に達すると消色し始め、温度ｔ３より高い完全消色温度ｔ４以上の温度域で完全に消色状態となり、消色状態から温度が下降する過程では、発色開始温度ｔ２に達すると発色し始め、温度ｔ２より低い完全発色温度ｔ１以下の温度域で完全に発色状態となるヒステリシス特性を示し、色濃度－温度曲線に関して２５℃以上のヒステリシス幅（ΔＨ）を示して変色し、完全消色温度ｔ４が３０～４０℃である温度変化により変色する可逆熱変色性材料を含む可逆熱変色層３を設けてなるコンクリート養生シート１。【選択図】 図２
CONCRETE CURING SHEET
コンクリート養生シート
MITA MASAYUKI (author) / KAITA NAO (author) / TSUNEKAWA TOMOAKI (author)
2024-07-19
Patent
Electronic Resource
Japanese
IPC:
E04G
SCAFFOLDING
,
Baugerüste